【C#】Json.Net應用 #2 : 解決Oracle 1000個參數上限問題

暐翰 2018-03-20 11:16:57 ‧ 12062 瀏覽

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遇到問題:

oracle 當where in 裡面字串超過1000個時候會爆出

舉例:

我有一個Excel超過1000筆資料

with Temp_Table as (
    select 1 編號 from dual
)
select * from Temp_Table
where  編號 in ('1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','25','26','27','28','29','30','31','32','33','34','35','36','37','38','39','40','41','42','43','44','45','46','47','48','49','50','51','52','53','54','55','56','57','58','59','60','61','62','63','64','65','66','67','68','69','70','71','72','73','74','75','76','77','78','79','80','81','82','83','84','85','86','87','88','89','90','91','92','93','94','95','96','97','98','99','100','101','102','103','104','105','106','107','108','109','110','111','112','113','114','115','116','117','118','119','120','121','122','123','124','125','126','127','128','129','130','131','132','133','134','135','136','137','138','139','140','141','142','143','144','145','146','147','148','149','150','151','152','153','154','155','156','157','158','159','160','161','162','163','164','165','166','167','168','169','170','171','172','173','174','175','176','177','178','179','180','181','182','183','184','185','186','187','188','189','190','191','192','193','194','195','196','197','198','199','200','201','202','203','204','205','206','207','208','209','210','211','212','213','214','215','216','217','218','219','220','221','222','223','224','225','226','227','228','229','230','231','232','233','234','235','236','237','238','239','240','241','242','243','244','245','246','247','248','249','250','251','252','253','254','255','256','257','258','259','260','261','262','263','264','265','266','267','268','269','270','271','272','273','274','275','276','277','278','279','280','281','282','283','284','285','286','287','288','289','290','291','292','293','294','295','296','297','298','299','300','301','302','303','304','305','306','307','308','309','310','311','312','313','314','315','316','317','318','319','320','321','322','323','324','325','326','327','328','329','330','331','332','333','334','335','336','337','338','339','340','341','342','343','344','345','346','347','348','349','350','351','352','353','354','355','356','357','358','359','360','361','362','363','364','365','366','367','368','369','370','371','372','373','374','375','376','377','378','379','380','381','382','383','384','385','386','387','388','389','390','391','392','393','394','395','396','397','398','399','400','401','402','403','404','405','406','407','408','409','410','411','412','413','414','415','416','417','418','419','420','421','422','423','424','425','426','427','428','429','430','431','432','433','434','435','436','437','438','439','440','441','442','443','444','445','446','447','448','449','450','451','452','453','454','455','456','457','458','459','460','461','462','463','464','465','466','467','468','469','470','471','472','473','474','475','476','477','478','479','480','481','482','483','484','485','486','487','488','489','490','491','492','493','494','495','496','497','498','499','500','501','502','503','504','505','506','507','508','509','510','511','512','513','514','515','516','517','518','519','520','521','522','523','524','525','526','527','528','529','530','531','532','533','534','535','536','537','538','539','540','541','542','543','544','545','546','547','548','549','550','551','552','553','554','555','556','557','558','559','560','561','562','563','564','565','566','567','568','569','570','571','572','573','574','575','576','577','578','579','580','581','582','583','584','585','586','587','588','589','590','591','592','593','594','595','596','597','598','599','600','601','602','603','604','605','606','607','608','609','610','611','612','613','614','615','616','617','618','619','620','621','622','623','624','625','626','627','628','629','630','631','632','633','634','635','636','637','638','639','640','641','642','643','644','645','646','647','648','649','650','651','652','653','654','655','656','657','658','659','660','661','662','663','664','665','666','667','668','669','670','671','672','673','674','675','676','677','678','679','680','681','682','683','684','685','686','687','688','689','690','691','692','693','694','695','696','697','698','699','700','701','702','703','704','705','706','707','708','709','710','711','712','713','714','715','716','717','718','719','720','721','722','723','724','725','726','727','728','729','730','731','732','733','734','735','736','737','738','739','740','741','742','743','744','745','746','747','748','749','750','751','752','753','754','755','756','757','758','759','760','761','762','763','764','765','766','767','768','769','770','771','772','773','774','775','776','777','778','779','780','781','782','783','784','785','786','787','788','789','790','791','792','793','794','795','796','797','798','799','800','801','802','803','804','805','806','807','808','809','810','811','812','813','814','815','816','817','818','819','820','821','822','823','824','825','826','827','828','829','830','831','832','833','834','835','836','837','838','839','840','841','842','843','844','845','846','847','848','849','850','851','852','853','854','855','856','857','858','859','860','861','862','863','864','865','866','867','868','869','870','871','872','873','874','875','876','877','878','879','880','881','882','883','884','885','886','887','888','889','890','891','892','893','894','895','896','897','898','899','900','901','902','903','904','905','906','907','908','909','910','911','912','913','914','915','916','917','918','919','920','921','922','923','924','925','926','927','928','929','930','931','932','933','934','935','936','937','938','939','940','941','942','943','944','945','946','947','948','949','950','951','952','953','954','955','956','957','958','959','960','961','962','963','964','965','966','967','968','969','970','971','972','973','974','975','976','977','978','979','980','981','982','983','984','985','986','987','988','989','990','991','992','993','994','995','996','997','998','999','1000','1001','1002','1003','1004','1005','1006','1007','1008','1009','1010','1011','1012','1013','1014','1015','1016','1017','1018','1019','1020','1021','1022','1023','1024','1025','1026','1027','1028','1029','1030','1031','1032','1033','1034','1035','1036','1037','1038','1039','1040','1041','1042','1043','1044','1045','1046','1047','1048','1049','1050','1051','1052','1053','1054','1055','1056','1057','1058','1059','1060','1061','1062','1063','1064','1065','1066','1067','1068','1069','1070','1071','1072','1073','1074')

解決方式:

超過1000個時添加or來分組

void Main()
{
	var str_json = @"
你的JSON字串	
";
	var list_json = JArray.Parse(str_json).Children<JObject>().ToList(); //獲取Jobject的集合

	//====組合自己想要的條件====
	var str_condition = "(\n ";
	var str_col_name = "編號";
	
	var count_of_group = list_json.Count / 1000;	//可分幾組
	for (int i = 0; i < count_of_group + 1; i++)
	{
		//以1000單位分組 (程式實現邏輯:SKIP跳過1000筆，TAKE取1000筆)
		var tem_list = list_json.Skip(1000 * i).Take(1000).ToList();

		//條件組合
		str_condition += (i > 0 ? "\n	or \n" : "") //假如超過一千組以 or 串接
			+ $@"	{str_col_name} in "  
			+ $@"({string.Join(",",tem_list.Select(s => $@"'{s.GetValue("編號")}'"))})";
	}
	str_condition += " \n) ";

	//====打印結果====
	Console.WriteLine(str_condition);
}